*SUPPORT*
IN: fep kiki wif OUT: PINK RED
IN: fep kiki fep OUT: RED RED
IN: fep blicket tufa OUT: GREEN RED GREEN
IN: fep blicket wif OUT: PINK RED PINK
IN: fep wif wif gazzer OUT: RED PINK PINK PINK
IN: zup OUT: YELLOW
IN: wif zup blicket fep OUT: PINK RED YELLOW RED
IN: zup blicket tufa OUT: GREEN YELLOW GREEN
IN: zup gazzer kiki zup gazzer OUT: YELLOW YELLOW YELLOW YELLOW
IN: tufa gazzer OUT: GREEN GREEN
IN: fep fep gazzer OUT: RED RED RED
IN: fep gazzer OUT: RED RED
IN: zup blicket wif OUT: PINK YELLOW PINK
IN: zup gazzer kiki zup blicket tufa OUT: GREEN YELLOW GREEN YELLOW YELLOW

*QUERY*
IN: fep tufa zup OUT: RED GREEN YELLOW
IN: wif blicket zup kiki wif OUT: PINK YELLOW PINK YELLOW
IN: fep OUT: RED
IN: wif kiki wif tufa blicket wif OUT: PINK PINK GREEN PINK PINK
IN: wif OUT: PINK
IN: tufa OUT: GREEN
IN: wif blicket tufa kiki fep kiki fep gazzer OUT: RED RED RED GREEN PINK GREEN
IN: zup gazzer OUT: YELLOW YELLOW
IN: wif tufa gazzer OUT: PINK GREEN GREEN
IN: fep blicket fep OUT: RED RED RED

*GRAMMAR*
tufa -> GREEN 
 fep -> RED 
 zup -> YELLOW 
 wif -> PINK 
 u1 gazzer -> [u1] [u1] 
 u1 blicket u2 -> [u2] [u1] [u2] 
 x1 kiki x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 